I still think that having a decent odo is all one needs on the bike. Re filling the tank, I have adopted what Kiwichick I think posted - top up the tank everytime the bike does 250kms - simple to remember, to get into the gas station at 1000, 1250, 1500 and so on and top up. That way the tank never really empties, because each top up then is about 6.5-7 litres at a time, in a 15 litre tank. Easy way to keep track of the fuel consumption as well, a key measure of how the bike is working too.For the milers, its not so convenient as it is for us metric people. Another reason for the hold outs to go metric??!!
Funny thing about metric in India though, and it did take me a long time to compute in kms in my head, without converting to miles to understand; but now here we use kms for speed and distance. But for height of people, we still seem to use feet/inches. For fluid and weight quantities, it is metric. For body weight, we use both, and I have only recently started to compute in my head with kgs. For body temperature, we are more comfortable understanding in Fahrenheit, while for weather, we prefer to use centigrade. Engineers talk mostly in microns now, and not so much of thou. If I look around, I am sure I will find more of such stuff!
Seems chaotic, but seems to work pretty well for us!